Cycle News - Archive Issues - 1970's

Are¥amaha motocross machines really as competitive as we saytheyare?Just ask the manwho rides one. Broc Glover, Bob Hannah and Rick Burgett rode theirs this year to the first grand slam in motocross history. Number One plates in AMA125, 250, @pen Class and Supercross. And theydid it onworks bikes that arecloser thaneverto YZ125,250 and 400waiting lO,V,}![i}!W!, ~ ~ 1-0 V ..c 8 v > o Z for you at yourYamaha dealer. We've made some significantimprovements in all three models thisyear. For one thing, power is up. And we mean up. As much as 20%in mid-range. WIth the torque you needto take the holeshot and never look back. Handling is even more responsive. Because we've increased the suspension travel, front and rear. A rigid triangulated swing- . armmetl1t$ truer rear wheel " traclJing. And the box-seCtion iIes . reduces 28 The new full-floating rear brake allows the shoe to rotate with the frame rather than the swing arm for smoother, more positive braking under all track conditions. And the swing arm pivot point is now closer to the countershaft, eliminating the needfor a chain tensioner. - OurYZ125 will be a bigger Y. threat than everin1979, with its newly-designed Monoshock. The oil and gas capacity is' Our exclusive nitrogen/oil Monoshock has exceptionally lung travel for consistent traction anacontrol./tsfully adjustable for dampening, spring preload and nitrogen lJr.~re. Ettensive pnning

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